JAVA_HOME 未设置错误，运行 React-native 应用程序后 [英] JAVA_HOME is not set error, after running React-native app

问题描述

PS C:\Users\Prabhudev\react-projects\react-native\myFirstApp> react-native run-android

PS C:\Users\Prabhudev\react-projects\react-native\myFirstApp> react-native run-android

信息 JS 服务器已在运行.info 在设备上构建和安装应用程序 (cd android && gradlew.bat app:installDebug)...

info JS server already running. info Building and installing the app on the device (cd android && gradlew.bat app:installDebug)...

错误:未设置 JAVA_HOME 并且在您的路径中找不到java"命令.
请在您的环境中设置 JAVA_HOME 变量以匹配您的 Java 安装位置.

ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
Please set the JAVA_HOME variable in your environment to match the location of your Java installation.

错误无法在设备上安装应用程序，请阅读上面的错误了解详情.确保您有一个正在运行的 Android 模拟器或已连接的设备设置您的 Android 开发环境:

error Could not install the app on the device, read the error above for details. Make sure you have an Android emulator running or a device connected and have set up your Android development environment:

https://facebook.github.io/react-native/docs/getting-started.html

错误命令失败:gradlew.bat app:installDebug.使用 --verbose 标志运行 CLI 以获取更多详细信息.

error Command failed: gradlew.bat app:installDebug. Run CLI with --verbose flag for more details.

推荐答案

首先将 JDK 和 JRE 路径添加到系统变量Path"像下面这样:

First Add the JDK and JRE paths to the System Variable "Path" like below:

其次，将 JAVA JDK 路径添加到 USER 变量中作为 JAVA_HOME.如下所示:

Secondly, Add the JAVA JDK path to the USER variable as JAVA_HOME. as shown below:

重启cmd进入app目录，用react-native run-android运行app瞧:

Restart the cmd and go to the app directory and run the app with react-native run-android Voila:

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